. >> reporter: diane feinstein is at the trade commission to investigate the skyrocketing pain at the pump. she said despite the pipeline and refinery shut down the -- it was almost as high as a year ago and stock piles of gas and blending parts combined were equal to this time last year. >> i think it's a good question. i would like to know why myself other than instability in the middle east and the usual things. >> reporter: it's difficult to look at from the data what there is actually some sort of -- uncompetitive behavior going on. >> reporter: gas stations can charge whatever they want for a gallon ever gas and they could make as little or as much as they want. >> over the weekend the governor said i'm directing the air resources board to take whatever steps necessary to blend to winter gas blend. >> the claim is -- from the governor's office that it'll -- if that's right, that will cause a drastic drop in gas. >> it doesn't matter. it's fine. >> reporter: the san francisco gas is at a record $4.74 a gallon but just a penny higher than sunday. a week ago just as the spike was s